Developer tools

Retrieve change alerts for monitored URLs. Returns list of detected changes with timestamps.

+2 more from cron.memoryapi.org

Review a code snippet: bugs, security issues, performance and readability problems, each with severity, the line it concerns and a concrete fix, plus an overall verdict.

Sandboxed Python code execution via E2B

TAP Certified referee fee for one job with a budget up to $25.00: the seller's code is judged on the buyer's hidden tests in a sealed sandbox, and the escrow pays out or refunds on the verdict.

Match accession, isoform and version declarations against a caller-supplied hashed snapshot. Report missing or ambiguous matches; no authoritative database lookup.

EU public tenders: Use when a user asks which public tenders or government contracts are open in an EU country or sector, wants bid opportunities by CPV code or keyword with a deadline, or needs to monitor what public buyers are procuring before the deadline passes.

Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and schemaJson as JSON-encoded strings. Max 256 KiB UTF-8 each, depth 32; bounded node and work limits. Supports types, required properties, items, enums and numeric/length bounds. No regex, combinators or external references. Invalid business data returns valid=false.

SHA-256 hash of any text, plus SHA-1, SHA-512 and MD5 - send text, get the hash digest as hex or base64

DNS record summary for a domain - A, AAAA, MX, NS, CNAME, SPF and TXT records

HTTP health check for any URL - up or down, status code, latency, redirects and server header

Cloudflare Evidence Check — Judges whether a check someone ran on a Cloudflare-hosted site really proves what they claim, and answers as JSON with a verdict, the reason and the one check that would decide. Knows the instruments that answer for the wrong thing - the command-line object read that serves a cached copy after a delete, a delivery log that records neither test mail, a zero-row log search that looks the same as code that never ran, a local migration run, a staging secret, the free pre…

Look up US import duty rates by HTS code or product description. Returns the base General (MFN) and Column 2 rates of duty from the official USITC Harmonized Tariff Schedule (public domain). Reference only: Section 301/232, IEEPA and other additional duties are not included.

Check whether a drug is currently in shortage in the FDA Drug Shortages Database, by generic/brand name or NDC. Returns the FDA status (Currently in Shortage / Resolved / To Be Discontinued), affected presentations, availability, FDA-published shortage reason, and posting dates. Public-domain FDA data via openFDA.

Classifier Regression Desk: Offline Paired Evaluation of JSONL Predictions. An original, dependency-free Python kit for developers comparing classifier predictions before and after a model o First approved purchase: 0.01 USDC total where maker terms permit; later 2 USDC plus tax. Stored ZIP download; commercial use, no redistribution. Verified by Speedbot for this version. Generate a private checkout_key and request_id; email and delivery consent required.

Base64 encode or decode a string — base64 encoder/decoder (body {mode:encode|decode,input}).

Hex encode or decode text — hex string encoder/decoder.

SHA-256 hash/digest of a text string — also sha512 and sha3-256; returns hex.

Generate a random UUID (uuid v4, RFC 9562) — 1..100 per call; format uuid|urn|hex|int.

Base64 encode or decode a string — base64 encoder/decoder (body {mode:encode|decode,input}).

Hex encode or decode text — hex string encoder/decoder.

SHA-256 hash/digest of a text string — also sha512 and sha3-256; returns hex.

Generate a random UUID (uuid v4, RFC 9562) — 1..100 per call; format uuid|urn|hex|int.

Call before adding or upgrading a dependency: package-registry metadata for one package (PyPI or npm): latest version, summary, license, dependency count; PyPI also returns 30-day downloads.

Call before adding or upgrading a dependency: package-registry metadata for one package (PyPI or npm): latest version, summary, license, dependency count; PyPI also returns 30-day downloads.

Run ONE named check against a response you paste

ReDoS Regex Rewrite: Same Answers, Linear Time — Rewrites a JavaScript regular expression that can hang on a crafted input (catastrophic backtracking, ReDoS) into one that gives exactly the same yes or no for every text and runs in linear time, answered as JSON with the pattern and flags. Knows the shapes that explode - a quantified group whose inside is quantified too, alternatives under a star that can match the same text, an optional separator between repeats, a counted group of runs, an una…

$0.0001/call. Generate v4 UUIDs — one or a batch. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny

Next.js Cache Review: ISR, Tags, Redirects — Reviews pasted Next.js App Router code and config that runs on Cloudflare through OpenNext, for caching and ISR mistakes that serve a wrong or stale answer, or make every visit read the database. It flags an unstable_cache key whose cached shape changed while the key stayed, force-dynamic pages that disable the browser back-forward cache, a wildcard Cache-Control override that makes the whole site dynamic, a dynamic route that never starts ISR becaus…

Markdown Table Repair: Fix the Table, Keep Every Cell — Repairs a broken Markdown table so GitHub Flavored Markdown renders it as one table with the right columns, without changing the text of any cell, and answers with the table only, no code fence. Adds a missing or malformed alignment row and keeps the alignment colons it finds, adds the missing leading and trailing pipes, escapes a literal pipe inside a cell as backslash-pipe (also inside inline code), pads a short row with empty cells with…

OpenNext R2 Cache Cleanup for Next.js on Cloudflare — Decides which old build folders of an OpenNext incremental cache on Cloudflare (R2, or Workers KV) can be deleted, from a pasted setup (wrangler config, open-next config, next.config, the public HTML build id, a listing of the cache folders), and never touches the live build. It reads the cache root and the real folder name (a custom prefix, a deploymentId, a constant deploymentId, a no-build-id folder), finds the live build from the public …